More information on the reference to James Hargrave on the Thomas Genealogy page (see 2/10/2002 entry):
See The letters of Letitia Hargrave p. 20. Mary, Margaret, George and Thomas Taylor were the children of Captain George Taylor (d. bef. 1838) and his “country wife,” Jane Prince (d. 1844). Mary Taylor was country wife of Chief Factor John Stuart who returned to Scotland in 1835 and sent for Mary in 1837. He sent her back to York Factory in 1839 after refusing to marry her. She later married John Smith and lived near her brother George.
The sentence in the Thomas Genealogy should read “Mary Taylor born 1827 daughter [of Cpt.] George [Taylor] married John Stuart (d-1847) Chief Factor Bas de la Riviere, who abandoned her 1835 [and finally in 1839], 2nd marriage [to John Smith] James Hargrave [Chief Factor at York Factory – ] he refused to [allow it to?] be churched.”